iShare recently took a close look at the size of breasts in Japan, as one does. Given the ample size, I’ll split the results into two posts.

Demographics

Between the 26th and 29th of August 2011 650 members of the CLUB BBQ free email forwarding service completed a private internet-based questionnaire. The 438 women were split into 31.7% in their twenties and 68.3% in their thirties. The 212 men were split into 22.2% in their twenties and 77.8% in their thirties.

It may seem odd, but one of the major underwear makers released in April last year an internet-only breast-reduction bra and sold all 2,000 pairs almost immediately, hastely produced another 6,000 pairs which again sold like hotcakes. From the 7th of this month they are selling this year’s model, again internet-only.

Research results

Q1: What is your bra size? (Sample size=438, women)

A cup or less

10.5%

B cup

19.9%

C cup

19.6%

D cup

28.3%

E cup

12.6%

F cup

6.2%

G cup

2.1%

H cup or more

0.9%

Q2: Do you worry about your bra size? (Sample size=438, women)

Very much so

31.7%

A little

48.4%

Not at all

19.9%

A cups and less and F cups and more caused the most worry; over 50% of the women of each of these sizes were very worried.

Q3: What kinds of bras do you use? (Sample size=438, women, multiple answer)

Three-quarters cup bra

67.4%

Full cup bra

46.1%

Non-wired bra

25.6%

Half cup bra

15.8%

Sports bra

11.0%

Strapless bra

10.5%

Unpadded bra

10.0%

Front hook bra

8.9%

Cleavage-enhancing bra (Wonderbra)

6.4%

Sleep bra

6.4%

Triangular bra

1.6%

Other

1.1%

Q4: Do you think having large (D cup or larger) breasts has merits over small breasts? (Sample size=438, women)